An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Garland T Jr, Morgan MT, Swallow JG, Rhodes JS, Girard I, Belter JG, Carter PA.Garland T Jr, et al. Among authors: swallow jg.Evolution. 2002 Jun;56(6):1267-75. doi: 10.1111/j.0014-3820.2002.tb01437.x.Evolution. 2002.PMID: 12144025